678461368 has 32 divisors (see below), whose sum is σ = 1379196000. Its totient is φ = 311027328.

The previous prime is 678461323. The next prime is 678461369. The reversal of 678461368 is 863164876.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678461369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6396 + ... + 37387.

It is an arithmetic number, because the mean of its divisors is an integer number (43099875).

Almost surely, 2^678461368 is an apocalyptic number.

It is an amenable number.

678461368 is an abundant number, since it is smaller than the sum of its proper divisors (700734632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678461368 is a wasteful number, since it uses less digits than its factorization.

678461368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43951 (or 43947 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 678461368 is about 26047.2909915791. The cubic root of 678461368 is about 878.7021881857.

The spelling of 678461368 in words is "six hundred seventy-eight million, four hundred sixty-one thousand, three hundred sixty-eight".